If Cayman's water (and other things) is that superior to Jamaica, indeed, it must be something to see and experience! Seriously...I'm not trying to be facetious.
Everything you've described is how I would describe the places we stayed in Montego Bay...except for the crime. However, our hotel was so well guarded (gated), it never affected us as long as we stayed on the grounds. Of course, during the day it wasn't a problem to go wherever we wanted.
So tell me, Troy ...on a scale of 1 to 10, how does Cayman compare to Galveston? LOL I haven't been there in years but as I recall it wouldn't be worth the drive anymore except perhaps for a great seafood place called Guido's (sp?). I wonder if it still exists...this was over 20 years ago?